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Updated: Oct 2, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Hypertension is an independent predictor of delayed graft function and worse renal function only in kidneys with
Salvatore Di Paolo1, Giovanni Stallone, Antonio Schena
1Department of Emergency and Organ Transplant, Division of Nephrology, University of Bari, Policlinico, Piazza Giulio Cesare, 11-70124 Bari, Italy.
Insights
Delayed graft function (DGF) in kidney transplants is linked to donor organ quality. Donor hypertension significantly increases DGF risk and impacts graft function, especially in suboptimal organs.
Area of Science:
- Nephrology
- Transplantation immunology
- Organ preservation
Background:
- Delayed graft function (DGF) is a key factor in poor graft survival after cadaveric renal transplantation.
- Risk factors and clinical predictors of DGF remain poorly understood.
Purpose of the Study:
- To analyze risk factors for DGF, focusing on donor kidney histological damage.
- To assess the impact of DGF and donor factors on kidney graft function in the first year post-transplant.
Main Methods:
- Analysis of risk factors for DGF in 100 consecutive cadaveric renal transplant recipients.
- Emphasis on histological damage in time-zero biopsies and donor characteristics.
- Evaluation of graft function at one year post-engraftment.
Main Results:
- Organs with DGF showed higher glomerular sclerosis, tubular atrophy, interstitial fibrosis, and vascular damage.
- Donor hypertension was a major independent predictor of DGF (OR 19.4) in suboptimal organs (histological score >4).
- DGF and donor hypertension adversely affected graft function at 1 year in recipients of suboptimal organs.
Conclusions:
- Organ quality and DGF are interrelated and affect graft function via non-immune mechanisms.
- Donor hypertension is a significant independent predictor of DGF and impacts graft function in suboptimal kidneys up to one year post-transplant.
Background:
Delayed graft function (DGF) has been identified as one of the principal correlates of poor graft survival in cadaveric renal transplantation. However, its risk factors and clinical predictors have been poorly elucidated.
Methods:
We analyzed the risk factors of DGF with a specific emphasis on the role of histological damage of donor kidney. Then, we also studied the impact of DGF, and donor factors affecting DGF, on kidney graft function over the first year after engraftment in 100 consecutive cadaveric renal transplant (Tx) recipients.
Results:
The organs displaying DGF (n=48) had a significantly higher degree of glomerular sclerosis and tubular atrophy (P<0.01), as well as of interstitial fibrosis and vascular damage (P<0.02) in time-zero biopsies. In patients who received an "ideal" organ for Tx (total histological score < or = 4), DGF showed a strong relationship with Deltaage D-R (70% increase of risk for donors 10 years older than recipients), and with the histological score (odds ratio 1.34). In contrast, donor hypertension was the most relevant variable independently associated with DGF (odds ratio 19.4) in patients receiving a suboptimal organ (histological score >4). Moreover, DGF and donor hypertension adversely affected graft function at 1 year, but only in Tx patients with a histological score >4 in time-zero biopsy. Of note, both patients with and those without DGF showed a very low incidence of biopsy-proven acute rejection (8.5 and 6.8%, respectively) and a rather short cold ischemia time (<16 hr).
Conclusion:
Our findings suggest that the quality of the transplanted organ and the occurrence of DGF are strictly related to each other and can influence graft function through apparently nonimmune mechanisms. In addition, long-standing donor hypertension is a strong independent variable affecting both DGF and graft function of suboptimal cadaveric kidneys, at least up to 1 year.
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Chronic Kidney Disease I: Introduction
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Kidney Transplant I: Introduction
Acute Kidney Injury III: Clinical Manifestations